CN113756477B - Construction method of heat-insulation prefabricated shear wall - Google Patents
Construction method of heat-insulation prefabricated shear wall Download PDFInfo
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- CN113756477B CN113756477B CN202111064762.4A CN202111064762A CN113756477B CN 113756477 B CN113756477 B CN 113756477B CN 202111064762 A CN202111064762 A CN 202111064762A CN 113756477 B CN113756477 B CN 113756477B
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- 238000010276 construction Methods 0.000 title claims abstract description 49
- 238000009413 insulation Methods 0.000 title claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 118
- 239000010959 steel Substances 0.000 claims abstract description 118
- 239000011178 precast concrete Substances 0.000 claims abstract description 62
- 239000004567 concrete Substances 0.000 claims abstract description 29
- 238000011065 in-situ storage Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 230000000452 restraining effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 9
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8623—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers and at least one form leaf being monolithic
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Panels For Use In Building Construction (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention provides a construction method of an insulated prefabricated shear wall, which is characterized in that longitudinal stress steel bars are respectively arranged in constraint areas of two side edges of a wall body, and double U-shaped FRP stirrups are arranged on the longitudinal stress steel bars; a plurality of longitudinal connecting steel bars are uniformly arranged in the middle area of the wall body; then, pouring an outer precast concrete slab, and inserting a double Z-shaped connector according to requirements before initial setting; paving an insulating layer on the outer precast concrete slab after the outer precast concrete slab is initially set; then, curing the external precast concrete slab; finally, vertically arranging the outer precast concrete slab at a specified position; the steel template is erected, and the inner side cast-in-situ concrete slab is poured, so that the outer side precast concrete slab and the inner side cast-in-situ concrete slab form a whole, the inner side steel template is removed after the concrete reaches the specified strength, and the installation construction is completed, thereby solving the problems of poor energy conservation and heat preservation, low construction efficiency, high transportation and installation cost and the like of the traditional precast shear wall.
Description
Technical Field
The invention belongs to the technical field of building industrialization prefabricated assembly type components and construction, and particularly relates to a construction method of a heat-insulation prefabricated assembly type shear wall.
Background
Along with the continuous development and promotion of building industrialization and assembly type building technology, the engineering construction of building environment-friendly, resource saving type, energy saving and emission reduction has become a hot spot and focus at the present stage. The prefabricated concrete structure system is one of the industrialized building structure systems commonly used in China at present, wherein the prefabricated concrete shear wall structure has high lateral rigidity and has the functions of bearing, heat preservation, enclosure and the like, and is commonly applied to residential community buildings in China, particularly safeguards and economy and applicability houses.
At present, an outer heat-preserving precast shear wall and an inner heat-preserving precast shear wall are in a common heat-preserving shear wall mode, but the inner heat-preserving shear wall has the problems that an inner heat-preserving layer is easy to damage, the wall body is greatly influenced by indoor decoration and the like, and the outer heat-preserving shear wall has serious fireproof and durability problems.
The sandwich composite shear wall has the advantages that the heat preservation layer is arranged in the wall body, so that various problems existing in the outer heat preservation prefabricated shear wall and the inner heat preservation prefabricated shear wall are avoided, but the sandwich composite shear wall still has the following problems:
(1) The energy-saving heat-insulating effect is poor, and the heat-insulating layer is arranged in the middle of the wall body in the conventional sandwich heat-insulating shear wall, but the wall body connecting piece and the wall body stirrups are made of metal materials, so that a heat bridge is generated at the parts, and the heat-insulating effect of the whole wall body is reduced;
(2) The construction is complicated. The number of the upper and lower connection of the shear walls is generally that every longitudinal steel bar in the wall body needs to be connected through a steel sleeve, and the construction speed is low and the efficiency is low due to the fact that the number of the longitudinal steel bars in the wall body is large.
(3) The transportation, hoisting and installation costs are high. Because the prefabricated sandwich concrete shear wall member is integrally formed in a prefabricated factory at present, the wall body is relatively high in quality, and the prefabricated sandwich concrete shear wall member needs to be matched with professional large-scale equipment for carrying out transportation, lifting and installation, so that the construction cost is relatively high.
Therefore, the invention aims to provide a construction method of the heat-insulating prefabricated assembled shear wall with the integrated bearing and heat preservation on the basis of researching and analyzing the defects of the existing precast concrete sandwich shear wall, so that the energy-saving heat preservation effect of the wall is greatly improved, the construction is convenient, and the transportation and installation cost is reduced.
Disclosure of Invention
Aiming at the defects of the existing precast concrete sandwich shear wall, the invention aims to provide a construction method of a heat-insulation type precast fabricated shear wall, and solves the problems of poor energy conservation and heat preservation, low construction efficiency, high transportation and installation cost and the like of the existing precast shear wall.
In order to solve the technical problems, the invention provides the following technical scheme:
a construction method of a heat-insulating prefabricated shear wall comprises the following steps:
scheme 1: paving vertically distributed steel bars and horizontally distributed steel bars in the outer precast concrete slab; longitudinal stress steel bars are respectively arranged in constraint areas on two side edges of the wall body, and double U-shaped FRP stirrups are arranged on the longitudinal stress steel bars; a plurality of longitudinal connecting steel bars are uniformly arranged in the middle area of the wall body; a restraining steel sleeve is arranged at the end part of the longitudinal stress steel bar, and a connecting steel sleeve is arranged at the end part of the longitudinal connecting steel bar;
scheme 2: pouring an outer precast concrete slab, and inserting a plurality of double Z-shaped connectors according to design requirements before the outer precast concrete slab is initially set, wherein the Z-shaped components consist of an inner reinforcing steel bar body and a plastic sleeve wrapped outside the inner reinforcing steel bar body; after the outer precast concrete slab is initially set, an insulation layer is paved on the outer precast concrete slab, and both the U-shaped FRP stirrups and the double Z-shaped connectors need to pass through the insulation layer;
scheme 3: curing the outer precast concrete slab, and conveying to a construction site for hoisting, mounting and constructing after curing;
scheme 4: vertically arranging the outer precast concrete plates at the designated positions, and connecting corresponding vertical steel bars in the adjacent precast concrete plates by using constraint steel sleeves and connecting steel sleeves; and (3) erecting a steel template, pouring an inner cast-in-situ concrete slab, enabling the outer precast concrete slab and the inner cast-in-situ concrete slab to form a whole, and dismantling the inner steel template after the concrete reaches the specified strength, so that the installation construction is completed.
Preferably, in the construction method of the heat-insulating prefabricated shear wall, the double-Z-shaped connector comprises two Z-shaped components, the two Z-shaped components are symmetrically arranged, and two ends of the two Z-shaped components are fixed together through steel wire winding and binding.
Preferably, in the construction method of the heat-insulating prefabricated shear wall, each of the "Z" shaped parts includes two end plates and a connecting plate, two ends of the connecting plate are respectively connected with one ends of the two end plates to form a "Z" shaped structure, two ends of the connecting plate of the two "Z" shaped parts are fixed together by winding and binding steel wires, the end plates of the two "Z" shaped parts located on one side are arranged on the outer precast concrete slab, and the end plates of the two "Z" shaped parts located on the other side are arranged in the inner cast-in-situ concrete slab.
Preferably, in the construction method of the heat-insulating prefabricated shear wall, the arrangement space of the double Z-shaped connectors is generally 200 mm-300 mm.
Preferably, in the construction method of the heat-insulating prefabricated shear wall, the double-U-shaped FRP stirrup comprises two U-shaped FRP parts, openings of the two U-shaped FRP parts are arranged oppositely, and corresponding side walls of the two U-shaped FRP parts are overlapped and bound with corresponding longitudinal stress steel bars.
Preferably, in the construction method of the heat-insulating prefabricated shear wall, the heat-insulating layer is an organic heat-insulating layer and/or an inorganic heat-insulating layer.
Preferably, in the construction method of the heat-insulating prefabricated shear wall, the horizontally-distributed steel bars and the vertically-distributed steel bars are vertically crossed to form a grid structure.
Preferably, in the construction method of the heat-insulating prefabricated shear wall, the longitudinal connecting steel bars are distributed at equal intervals in the middle of the wall body, and the number of the longitudinal connecting steel bars is 1/2 of that of the vertically distributed steel bars.
Compared with the prior art, the technical scheme disclosed by the invention has the following beneficial effects:
according to the construction method of the heat-insulating prefabricated shear wall, the vertically distributed steel bars and the horizontally distributed steel bars in the outside precast concrete slab are paved; longitudinal stress steel bars are respectively arranged in constraint areas on two side edges of the wall body, and double U-shaped FRP stirrups are arranged on the longitudinal stress steel bars; uniformly arranging a plurality of longitudinal connecting steel bars in the middle area of the wall body, wherein the number of the longitudinal connecting steel bars is smaller than that of the vertically distributed steel bars; a restraining steel sleeve is arranged at the end part of the longitudinal stress steel bar, and a connecting steel sleeve is arranged at the end part of the longitudinal connecting steel bar; then, pouring an outer precast concrete slab, and inserting a plurality of double Z-shaped connectors according to design requirements before the outer precast concrete slab is initially set, wherein the Z-shaped components consist of an inner reinforcing steel bar body and a plastic sleeve wrapped outside the inner reinforcing steel bar body; after the outer precast concrete slab is initially set, an insulation layer is paved on the outer precast concrete slab, and both the U-shaped FRP stirrups and the double Z-shaped connectors need to pass through the insulation layer; then, curing the external precast concrete slab, and conveying to a construction site for hoisting, mounting and constructing after curing; finally, vertically arranging the outer precast concrete slab at a designated position, and connecting corresponding vertical steel bars in the adjacent precast concrete slabs by using a constraint steel sleeve and a connecting steel sleeve; on one hand, because the two U-shaped FRP stirrups are adopted in the two side edge constraint areas of the wall body to replace the traditional steel stirrups, and the adopted Z-shaped component consists of an inner reinforcing steel bar body and a plastic sleeve wrapped outside the inner reinforcing steel bar body, the heat conduction coefficient of the Z-shaped component is effectively reduced, heat bridge-cutoff is generated at the positions, and the energy-saving and heat-preserving effects of the shear wall are greatly improved. On the other hand, through the regional a plurality of vertical connecting bars that set up in wall body middle part, set up the restraint steel sleeve that is used for connecting precast concrete board at the tip of vertical atress reinforcing bar, set up the connection steel sleeve that is used for connecting precast concrete board at vertical connecting bar tip, utilize vertical connecting bar to replace the vertical distribution reinforcing bar among the prior art, connect adjacent component, effectively reduced the reinforcing bar quantity that needs to connect for construction speed has improved the efficiency of construction. In addition, as the cast-in-situ concrete slab at the inner side is poured later, the transportation, hoisting and installation costs are reduced, no special large-scale equipment is needed, and the construction cost is lower.
Drawings
FIG. 1 is an elevation view of a heat-insulated prefabricated shear wall.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a B-B cross-sectional view of fig. 1.
FIG. 4 is a cross-sectional view of FIG. 1C-C
Fig. 5 is a schematic structural view of a double "Z" type connector.
Fig. 6 is a schematic structural view of a double "Z" type component.
FIG. 7 is a schematic view of the structure of a double "U" shaped FRP stirrup.
In the figure: the wall body is 1, 2 is an outer precast concrete slab, 3 is an inner cast-in-situ concrete slab, 4 is an insulating layer, 5 is a double Z-shaped connector, 5-1 is a plastic sleeve, 5-2 is a reinforcement body, 5-3 is, 6 is a longitudinal stress reinforcement, 7 is a double U-shaped FRP stirrup, 7-1 is a U-shaped FRP component, 8 is a horizontally distributed reinforcement, 9 is a vertically distributed reinforcement, 10 is a longitudinal connecting reinforcement, 11 is a constraint steel sleeve, and 12 is a connecting steel sleeve.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. The technical contents and features of the present invention will be described in detail below with reference to the attached drawings by way of the illustrated embodiments. It should be further noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. For convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the drawings, but this should not be construed as a limitation of the technical scheme of the present invention.
Referring to fig. 1 to 7, the embodiment discloses a construction method of a heat-insulation prefabricated shear wall, which comprises the following steps:
scheme 1: the method comprises the steps of paving vertically distributed steel bars 9 and horizontally distributed steel bars 8 in an outer precast concrete slab 2, wherein the horizontally distributed steel bars 8 and the vertically distributed steel bars 9 are vertically crossed to form a grid structure; longitudinal stress steel bars 6 are respectively arranged in constraint areas on two side edges of the wall body 1, and double U-shaped FRP stirrups 7 are arranged on the longitudinal stress steel bars 6, wherein FRP refers to English abbreviations of fiber reinforced plastic stirrups; a plurality of longitudinal connecting steel bars 10 are uniformly arranged in the middle area of the wall body 1, and the number of the longitudinal connecting steel bars 10 is smaller than that of the vertically distributed steel bars 9; a restraining steel sleeve 11 is arranged at the end part of the longitudinal stress steel bar 6, and a connecting steel sleeve 12 is arranged at the end part of the longitudinal connecting steel bar 10;
scheme 2: pouring an outer precast concrete slab 2, and inserting a plurality of double Z-shaped connectors 5 according to design requirements before the outer precast concrete slab 2 is initially set, wherein the Z-shaped components consist of an inner reinforcing steel bar body 5-2 and a plastic sleeve 5-1 wrapped outside the inner reinforcing steel bar body 5-2; after the outside precast concrete slab 2 is initially set, a heat insulation layer 4 is paved on the outside precast concrete slab, and both the U-shaped FRP stirrups and the double Z-shaped connectors 5 need to penetrate through the heat insulation layer 4;
scheme 3: curing the outer precast concrete slab 2, and conveying to a construction site for hoisting, mounting and constructing after curing;
scheme 4: the outside precast concrete slab 2 is vertically arranged at a designated position, and corresponding vertical steel bars in the adjacent precast concrete slabs are connected by the constraint steel sleeve 11 and the connecting steel sleeve 12; and (3) erecting a steel template, pouring an inner cast-in-situ concrete slab 3, enabling the outer precast concrete slab 2 and the inner cast-in-situ concrete slab 3 to form a whole, and dismantling the inner steel template after the concrete reaches the specified strength, so that the installation construction is completed.
According to the construction method of the heat-insulating prefabricated shear wall, the vertical distribution steel bars 9 and the horizontal distribution steel bars 8 in the outer precast concrete slab 2 are paved, and the horizontal distribution steel bars 8 and the vertical distribution steel bars 9 are vertically crossed to form a grid structure; longitudinal stress steel bars 6 are respectively arranged in constraint areas at two side edges of the wall body 1, and double U-shaped FRP stirrups 7 are arranged on the longitudinal stress steel bars 6; a plurality of longitudinal connecting steel bars 10 are uniformly arranged in the middle area of the wall body 1, and the number of the longitudinal connecting steel bars 10 is smaller than that of the vertically distributed steel bars 9; a restraining steel sleeve 11 is arranged at the end part of the longitudinal stress steel bar 6, and a connecting steel sleeve 12 is arranged at the end part of the longitudinal connecting steel bar 10; then, pouring an outer precast concrete slab 2, and inserting a plurality of double Z-shaped connectors 5 according to design requirements before the outer precast concrete slab 2 is initially set, wherein the Z-shaped components consist of an inner reinforcement 5-2 and a plastic sleeve 5-1 wrapped outside the inner reinforcement 5-2; after the outside precast concrete slab 2 is initially set, a heat insulation layer 4 is paved on the outside precast concrete slab, and both the U-shaped FRP stirrups and the double Z-shaped connectors 5 need to penetrate through the heat insulation layer 4; then, curing the external precast concrete slab 2, and conveying to a construction site for hoisting, mounting and constructing after curing; finally, vertically arranging the outer precast concrete slab 2 at a designated position, and connecting corresponding vertical steel bars in the adjacent precast concrete slabs by using a constraint steel sleeve 11 and a connecting steel sleeve 12; the steel formwork is erected, the inner side cast-in-situ concrete slab 3 is poured, the outer side precast concrete slab 2 and the inner side cast-in-situ concrete slab 3 form a whole, the inner side steel formwork is removed after the concrete reaches the specified strength, and the installation construction is completed, on one hand, because the two U-shaped FRP stirrups are adopted in the two side edge constraint areas of the wall body 1 to replace the traditional steel stirrups, and the adopted Z-shaped parts are composed of the inner reinforcing steel bar body 5-2 and the plastic sleeve 5-1 wrapped outside the inner reinforcing steel bar body 5-2, the heat conduction coefficient of the steel bar body is effectively reduced, heat bridge-cutoff is generated at the parts, and the energy-saving and heat-preserving effects of the shear wall are greatly improved. On the other hand, through wall body 1 middle part region sets up a plurality of vertical connecting bars 10, sets up the restraint steel sleeve 11 that is used for connecting precast concrete board at the tip of vertical atress reinforcing bar 6, sets up the connection steel sleeve 12 that is used for connecting precast concrete board at vertical connecting bar 10 tip, utilizes vertical connecting bar 10 to replace vertical distribution reinforcing bar 9 among the prior art, connects adjacent component, has effectively reduced the reinforcing bar quantity that needs to connect for construction speed, has improved the efficiency of construction. In addition, as the cast-in-situ concrete slab 3 at the inner side is cast later, the transportation, hoisting and installation costs are reduced, no special large-scale equipment is needed, and the construction cost is lower.
In order to improve the connection strength between the outer precast concrete slab 2 and the inner cast-in-situ concrete slab 3, thereby improving the overall strength of the heat-insulating prefabricated shear wall, preferably, in the construction method of the heat-insulating prefabricated shear wall, the double-Z-shaped connector 5 comprises two Z-shaped parts, the two Z-shaped parts are symmetrically arranged, and the two ends of the two Z-shaped parts are fixed together by winding and binding steel wires 5-3. Preferably, each Z-shaped component comprises two end plates and a connecting plate, two ends of the connecting plate are respectively connected with one ends of the two end plates to form a Z-shaped structure, two ends of the connecting plates of the two Z-shaped components are fixed together through winding and binding of steel wires 5-3, the end plates of the two Z-shaped components, which are positioned on one side, are arranged on the outer precast concrete slab 2, and the end plates of the two Z-shaped components, which are positioned on the other side, are arranged in the inner cast-in-situ concrete slab 3.
Preferably, in the construction method of the heat-insulation prefabricated shear wall, the arrangement space of the double-Z-shaped connectors 5 is generally 200 mm-300 mm, when the shear wall is designed to work together with the inner and outer concrete wall panels, the arrangement space of the connectors can be properly reduced, when the shear wall is designed to work together with the inner and outer concrete wall panels, the arrangement space of the connectors can be properly increased, and meanwhile, the arrangement space can be reduced at two ends of the wall body 1 and increased in the middle area of the wall body 1.
Preferably, in the construction method of the heat-insulation prefabricated shear wall, the double-U-shaped FRP stirrup 7 includes two U-shaped FRP members 7-1, the openings of the two U-shaped FRP members 7-1 are oppositely arranged, and the corresponding side walls of the two U-shaped FRP members 7-1 are stacked together and bound together with the corresponding longitudinal stress steel bars 6. By adopting the structure, the strength of the two sides of the wall body 1 can be enhanced, and the FRP is a heat insulation material, so that the heat conduction between the outside precast concrete slab 2 and the inside cast-in-situ concrete slab 3 of the traditional steel stirrups can be effectively prevented, and the energy-saving heat preservation effect is improved.
Preferably, in the construction method of the heat-insulation prefabricated shear wall, the heat-insulation layer 4 is an organic heat-insulation layer 4 and/or an inorganic heat-insulation layer 4, so that the shear wall is ensured to have good heat-insulation performance.
Preferably, in the construction method of the heat insulation type prefabricated shear wall, the longitudinal connecting steel bars are distributed at equal intervals in the middle of the wall body 1, and the number of the longitudinal connecting steel bars is 1/2 of that of the vertically distributed steel bars.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (5)
1. The construction method of the heat-insulating prefabricated shear wall is characterized by comprising the following steps of:
scheme 1: paving vertically distributed steel bars and horizontally distributed steel bars in the outer precast concrete slab; longitudinal stress steel bars are respectively arranged in constraint areas on two side edges of the wall body, double U-shaped FRP stirrups are arranged on the longitudinal stress steel bars, each double U-shaped FRP stirrup comprises two U-shaped FRP parts, openings of the two U-shaped FRP parts are oppositely arranged, and corresponding side walls of the two U-shaped FRP parts are overlapped and bound with the corresponding longitudinal stress steel bars; a plurality of longitudinal connecting steel bars are uniformly arranged in the middle area of the wall body; a restraining steel sleeve is arranged at the end part of the longitudinal stress steel bar, and a connecting steel sleeve is arranged at the end part of the longitudinal connecting steel bar;
scheme 2: pouring an outer precast concrete slab, inserting a plurality of double Z-shaped connectors according to design requirements before the outer precast concrete slab is initially set, wherein the double Z-shaped connectors comprise two Z-shaped components, the two Z-shaped components are symmetrically arranged, two ends of the two Z-shaped components are fixed together through steel wire winding and binding, each Z-shaped component comprises two end plates and a connecting plate, two ends of the connecting plate are respectively connected with one ends of the two end plates to form a Z-shaped structure, two ends of the connecting plate of the two Z-shaped components are fixed together through steel wire winding and binding, the end plates on one side of the two Z-shaped components are arranged in the outer precast concrete slab, the end plates on the other side of the two Z-shaped components are arranged in the inner cast-in-situ concrete slab, and the Z-shaped components consist of an inner reinforcing steel bar body and a plastic sleeve wrapped outside the inner reinforcing steel bar body; after the outer precast concrete slab is initially set, an insulation layer is paved on the outer precast concrete slab, and both the U-shaped FRP stirrups and the double Z-shaped connectors need to pass through the insulation layer;
scheme 3: curing the outer precast concrete slab, and conveying to a construction site for hoisting, mounting and constructing after curing;
scheme 4: vertically arranging the outer precast concrete plates at the designated positions, and connecting corresponding vertical steel bars in the adjacent precast concrete plates by using constraint steel sleeves and connecting steel sleeves; and (3) erecting a steel template, pouring an inner cast-in-situ concrete slab, enabling the outer precast concrete slab and the inner cast-in-situ concrete slab to form a whole, and dismantling the inner steel template after the concrete reaches the specified strength, so that the installation construction is completed.
2. The construction method of the heat-insulating prefabricated shear wall according to claim 1, wherein the arrangement space of the double Z-shaped connectors is 200-300 mm.
3. The method for constructing an insulated prefabricated shear wall according to claim 1, wherein the heat-insulating layer is an organic heat-insulating layer and/or an inorganic heat-insulating layer.
4. The method for constructing an insulated prefabricated shear wall according to claim 1, wherein the horizontally-distributed steel bars and the vertically-distributed steel bars are vertically crossed to form a grid structure.
5. The construction method of the heat-insulating prefabricated shear wall according to claim 1, wherein the longitudinal connecting steel bars are distributed at equal intervals in the middle of the wall, and the number of the longitudinal connecting steel bars is 1/2 of that of the vertically distributed steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111064762.4A CN113756477B (en) | 2021-09-10 | 2021-09-10 | Construction method of heat-insulation prefabricated shear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111064762.4A CN113756477B (en) | 2021-09-10 | 2021-09-10 | Construction method of heat-insulation prefabricated shear wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113756477A CN113756477A (en) | 2021-12-07 |
| CN113756477B true CN113756477B (en) | 2023-05-30 |
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| CN106121249B (en) * | 2016-06-29 | 2018-04-06 | 成都建筑工程集团总公司 | A kind of plug-in board construction method of the overall assembled building based on BIM technology |
| CN108149814A (en) * | 2017-11-24 | 2018-06-12 | 上海建工集团股份有限公司 | Load-bearing, heat insulation integrated novel prefabricated assembled shear wall and construction method |
| CN107905405A (en) * | 2017-12-20 | 2018-04-13 | 沈阳建筑大学 | A kind of prefabricated assembled shear wall horizontal connection construction |
| CN108442536A (en) * | 2018-03-30 | 2018-08-24 | 沈阳建筑大学 | A kind of prefabricated assembled shear wall groove slurry anchor horizontal connection construction |
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